Attachment for typewriters



Dec. 11, 1923. 1,477,048

l F. E. FANGER A l ATTACHMENT FOR `TYPEWRITERS Fil-ed April 2 1920 2Sheets-Shet l Ammers' Dec. 11, 1923.

F. E. FANGER ATTACHMENT FOR TYPEWRITERS 2 Sheets-Sheet 2 Filed April 21920 Nn* S .wvf/vron Afro/Mfrs the setting of Patented Eea. ll, 1923;c

FRED EDWARD FANGER, F MEXICO, MEXICO.

ATTACHMENT FOR TYFEWB/TES.

application ined april 2,

To all whom maiyconcern Be it known that FRED EDWARD FANGER, a citizenor the United States, and a resident of Mexico, D. F., Republic oiMexico, have invented a new and improved Attach ment for Typewriters, ofwhich the followinv is a description.

Vy invention relates to an attachment for typewriters whereby the userof the typewriter may know lat any time and instantly how many lines maystillbe written upon the unused port-ion of the paper in the machine.

More especially the invention relates to an attachment for the indicatedpurpose embodying an indicating element to be revolvedL lwith the axleof the platen roller of the typewriter and a relatively fixed indi'-cating element.

The general object of the present invention is to provide an attachmentof the indicated character improved in various particulars, moreespecially with respect to the drive means for the turnable indie-ating'element and the means making provision for the indicating means, andwhereby also to provide an attachment comprising few elements making forsimplicity oit assemblage and adjustment.

Reference is to be had to the accompanying drawings forming a part ofthis specitication, it being understood that the drawings are merelyillustra-tive oi one example of the invention.

Figure 1 is a lan view 'of a typewriter attachment enibo ying my presentinvention illustrating the same applied to the axle of the platen rollershown in part;

F iffure 2 is a vertical section through the attachment onthe line 2 2,Figure 1, the platen. roller being in side elevation;

Figure 3 is atransverse section on the line 3-3, Figure 2;

Figure. 4 is a view similar to Figure 2 but illustrating another form ofthe attachment; Figure 5 is a cross section on the line 5-5, Figure 4t;

Figure 6 is a developed view of the index means on the revolubleindicating element. Referring more particularly to Figures 1 to 3, Aindicates a portion of the usual platen roller or the typewriter; B, theaxle thereof; and C, a portion of the typewriter frame. I provide anaxle extension 10 formed upon or secured to the axle B to be rigid withthe latter for turning therewith,v

Vdrive O'earinfr.

i920, serial recrea/1e.

in the present example, said extension V10 is made tubular at its innerend 11 to re? eeive the end oi the axle B and suitably fastened theretoas by set screws 12. For manually turning the extension 10 andthe axle'BWiththe platen roller A any suitable Y i means may be provided, such asthe usual milled handwheel 13, here shown as fas tened by a set screw 14to the extension lOlA Fast on the axle extension 10 is a drive element15, here shown as a toothed pinion which meshes with `and serves todrive pinions 16 turning on stud axles 17 secured to a base plate 18'or' suitable form adapted to be secured to the trame C, there beingshown for the purpose a liange 19 onsaid base plate secured by screws 20to trarne C. Rigid with the base plate 18 is an index element in theform of a pointer 21 which extends over a revoluble indicating element22. Said revoluble element 22 is in the 'form 01" a shell presenting anannular flange bearing index means at its outer periphery and includes aplate or disk 23 having a hub 24e fitting the axle extension 10. Therevoluble element 22 thus houses the describedY A clearanceisp-rovidedat the inner end of the hub 24 to permit Vit to b-e moved on theextension 10 toward the drive pinion 15. A coiled`spring'25 is providedsurrounding the axle extension 10 and the adjacent end'of the hub 24',one end of the spring abutting the pinion 15 and the other abutting theplate 23; An internal gear 26 on the indicating element 22 is normallyin mesh witlifpinions 16 to be driven by the latter. maintains theinternal gear26 in mesh with the pinions 16 but said springis yieldablei to an inward axial movement or thev plate The spring y normally 23 andindicating velement v22, so that the internal fear 26 may be movedout ofgear with the .pinions 16 so that the revolublej indicating element221nay be turned inde-` pendently ot' the axle Bandits extension 1()Vand independently of the gear elements 15 and 16 for optionally settingsaid revolu# ble indicating element rela-tively to the pointer 21.

The. indicator element22 bears on its periphery index means in the formof three annular series of subdivisions and identifying symbols, thedivisions and symbols of the respective series being in the ratio to oneanother of one', two and three, corre- ,SPOndng-te Single, double@1.111. tfipls Spas-1 les ` housing ii an ge ing oi' typewritten lines,so thatias the pieten A is t' rned forwardly or baelivar'diy themovement is indicated on the element 22 by the pointer 21. in theiliustrated example the sub-divisions in one series correspond withsingle-line spacing are indica-ted' by numerals in units oi' six` np toseventytwo.. The second, intermediate series cor resp-ond withdou-ble-line spacing and bear numerals in units off While the thirdseries presents sub-divisions correspondingwith tripleline spacing andnumbered in unit-s of two Lip to ytwenty-toni'. Y In practice, theindicati-ngv means is set by turning .the re'v'oliiblle element 22 underthe pointer 21 after which n0v 'further adjustment or manipulation ofthe attachment is required. The setting as thiis stated is done by firstdisengaging' the internal gear 26from the pinions 16, allowing` theelement -Vto turn freely baiekwar'dly or forwardly. The spring 25automatic-ally returns the plate 23, element 22, and internal gear 26 toa position with the latter in mesh with the pinions 16. It will beobvious that the attachment; may he seit at any ytime either before orafter placing the paper iii the typewriter. The attachment may beembodied in a typeivritinp; machine at the tactory or applied to themachine after leaving the factory.

In'tlie form of the invention shown in` 1ip'gures 4 :and 5 `an axleeitension 10a is Y provided, here slioivn as attachahle to or detachablefrom the axle B of the platen roller A, ythe tubular inner end 11 ot'said eXtension being` secured by set screws 121 to the axle B, the outerend of said eX-tension havin g the handvvheel 13. Rigid with theextension 10l to turn therewith is ay drive element 152L here. shown as-apinion meshing;` with a pinion 16a loos-e on a stud shai't 1Taprojeetingr from `the base plate 18a, the flange 1921 of which isrigidly secured to the frame C and is provided with a. pointer 21extending over the periphery oit the revoluble indicator element 2 ahaving at its inner end a 22b directed 'radially inward inside of thepinions 15, 16a. r)lie revoluble element 22 includes a disk or plate 23ahaving a hub 242L sleeved onto lthe extension 103 adjacent to thehandwheel 13. The stud shaft 17a has also loo-se thereon a secondtl'iree up to thirty-six,

pinion 161 meshing with a pinion or armular; rack 26ZL extending,-aboiit but free from theV extension 10 and secured to plate 223ia l yany suitable means such as pins or screws 26". An extension spring' 25fLis coiled about the extension 10 between the pinions 15, 26a and abriterespectively at its ends against said pinions tono-rinaily maintain thepinion 26 in mesh Wirt-li the pinion 16" to be drive-n by the latter.Sad spring is yieldable to van inwardr movement of the revoluble.indicatingelement to disengage the pinion tro-m the pinion V16b orsetting'the indicator by turning' the revoliible element.

. I would state in conclusion that vvliilethe illustrated exampleconstitutes a practicar embodiment of my invention, l do not innitmyseli strictly to the mechanical details' herein illustrated sincemanifestly the same can be considerably varied Without departure Jrenithe spirit of the invention asv de` fined in the appended claims.

Having' thus described my invention, I

claim:

1... A typewriter attachment including. a support adapted to be Securedto a fixed part of a. typewriter adjacent to the axle oi the platenrol-ler, an-axle extension adaptedI to be secured to the axle of thetypewritena pointer on said support, anV indicator ele* ment ievolublerelatively t0 said pointer andA coaxial with said extension, a drivengear element on said i'evoluble indicating element, a drive elementiiXed on said axle extension, and a, driving' connection between saiddrive and driven element and carried by said support, said revolubleindioatingu element being vvoptionally turnable independently of saiddrive element. n Y

2. A; typewriter attachment ot the class described comprising arotatable drum, a reducing` gear interposed i 'etiveen the said drum andthe platen roller o'i the typewriter which permits Vrotation ot' thedrinn in both directions, Vindex means 'aiixed to the said drinnpresenting* three annular series of subdivisions oorreepond-ing withsingle, double, and triple spacing' and a` stationary pointer iorsimultaneously indicating the corresponding single, double and tripleline spaces remaining on the page.

YFinn) EDWARD randen.k

